Animação de fluidos via autômatos celulares e sistemas de partículas

• Ano de defesa: 2006
• Autor(a) principal: Xavier, Adilson Vicente
• Orientador(a): Giraldi, Gilson Antonio
• Banca de defesa: Oliveira, Jauvane Cavalcante de , Souza Neto, Eduardo Alberto de , Sphaier, Sergio Hamilton , Dreux, Marcelo de Andrade
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Laboratório Nacional de Computação Científica
• Programa de Pós-Graduação: Programa de Pós-Graduação em Modelagem Computacional
• Departamento: Serviço de Análise e Apoio a Formação de Recursos Humanos
• País: BR
• Palavras-chave em Português: Animação de fluidos; Visualização científica; SPH; FHP
• Palavras-chave em Inglês: Fluid animation; Scientific visualization; SPH; FHP
• Área do conhecimento CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO::MATEMATICA DA COMPUTACAO
• Link de acesso: https://tede.lncc.br/handle/tede/45

The past two decades showed a rapid growing of physically-based modeling of fluids for computer graphics applications. Techniques in the field of Computational Fluid Dynamics (CFD) have been applied for realistic fluid animation for virtual surgery simulators, computer games and visual effects. In this approach, since the equation is solved numerically the next step is the rendering. A majority of fluid animation methods in computer graphics rely on a top down viewpoint that uses 2D/3D mesh based approaches motivated by the Eulerian methods of Finite Element (FE) and Finite Difference (FD), in conjunction with Navier-Stokes equations of fluids. Recently mesh-free methods like Smoothed Particle Hydrodynamics (SPH) have been applied. On the other hand, cellular automata (CA) are discrete models based on point particles that move on a lattice, according to suitable and simple rules in order to mimic a fully molecular dynamics. Such bottom-up framework needs low computational resources for both the memory allocation and the computation itself. In this work, we study the theoretical and practice aspects for computational animation of fluids in computer graphics, using cellular automata and SPH. We propose two models for animation of two-phase systems (e.g. gas-liquid), one based on SPH and CA and another only on CA. Finally, we describe a software developed in the context of this thesis for animation of fluids by CA.